pkg/cri: remove support for the obsolete v1alpha2 CRI protocol.

[klihub]

This patch set

• removes support and protocol conversion for the obsolete v1alpha2 version of the CRI protocol
• bumps our CRI dependency to release 1.29/v0.29.0
• implements missing RuntimeService client and server interfaces
• implements relaying of all the non-streaming Runtime client and server interfaces

Note that relaying for the streaming PLEG/GetContainerEvents interface is not implemented.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (cfe4bc2) 32.12% compared to head (3ffff03) 32.12%. Report is 7 commits behind head on master.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1081 +/- ## ======================================= Coverage 32.12% 32.12% ======================================= Files 64 64 Lines 9937 9937 ======================================= Hits 3192 3192 Misses 6449 6449 Partials 296 296 ```

:umbrella: View full report in Codecov by Sentry.
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[marquiz]

LGTM

[marquiz]

I suppose this is something to be emphasized in release notes... CRI-RM 0.9 requires Kubernetes 1.23+ and containerd 1.6+ or something.

Yes, definitely.

@klihub please rebase and let's see how it goes. I think this would be "Ready for review" 😊

[marquiz]

Or should we wait for #1079?

[klihub]

@marquiz, @askervin I think merging this requires/warrants rerunning the end-to-end tests.

[marquiz]

I think merging this requires/warrants rerunning the end-to-end tests.

Fair point

[klihub]

I think merging this requires/warrants rerunning the end-to-end tests.

Fair point

Okay, with the latest commit at the tip, all tests pass.

[marquiz]

Okay, with the latest commit at the tip, all tests pass.

Yeah, same here.

LGTM